Process tuple contents on the fly

[Peter Otten]

Tim Chase wrote:

> On 2013-04-15 11:25, Gnarlodious wrote:
>> Say I have a tuple I want to expand assigning to variables:
>> 
>> tup = *func()
>> var = tup[0]
>> lst.append(tup[1])
>> 
>> Or could I do it in one line?
>> 
>> var, lst.append() = *func()
>> 
>> So I want to append one variable to a list on the fly, is it
>> possible?
> 
> I stumbled across this atrocity[*], which if you chose to use it,
> you'd deserve a kick in the pants:
> 
>   lst.append("Value I don't care about and will overwrite")
>   var, lst[-1] = *func()
> 
> It's not quite one step, but at least the *assignment* is one step :-)

I think the star is on the wrong side. 


So:

>>> items = ["a", "b", "c"]
>>> def f(result=(4, 5, 6)): return result
... 
>>> var, *items[len(items):] = f()
>>> var
4
>>> items
['a', 'b', 'c', 5, 6]